WO2001002027A1 - Process for sterilizing and disposing of potentially contaminated waste - Google Patents

Process for sterilizing and disposing of potentially contaminated waste Download PDF

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Publication number
WO2001002027A1
WO2001002027A1 PCT/IB2000/000887 IB0000887W WO0102027A1 WO 2001002027 A1 WO2001002027 A1 WO 2001002027A1 IB 0000887 W IB0000887 W IB 0000887W WO 0102027 A1 WO0102027 A1 WO 0102027A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
waste
vessels
designed
pulverized
Prior art date
Application number
PCT/IB2000/000887
Other languages
French (fr)
Inventor
Giancarlo Andolfi
Original Assignee
Luna Two S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Luna Two S.A. filed Critical Luna Two S.A.
Priority to AU52425/00A priority Critical patent/AU5242500A/en
Publication of WO2001002027A1 publication Critical patent/WO2001002027A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
    • B09B3/35—Shredding, crushing or cutting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/24—Apparatus using programmed or automatic operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L11/00—Methods specially adapted for refuse
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/0075—Disposal of medical waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • B09B3/21—Agglomeration, binding or encapsulation of solid waste using organic binders or matrix

Definitions

  • the present invention relates to the health care sector and more specifically to that part of it that deals with the sterilization and subsequent disposal of various types of potentially contaminated waste, such as for example (but not exclusively) hospital waste.
  • waste such as for example (but not exclusively) hospital waste.
  • problems which hamper operations to sterilize hospital waste among which the most significant relate to the hazards and costs involved in handling the waste both before and after treatment, the ease with which the known machines, such as triturators or the like, jam - thereby interrupting the sterilization cycle before it is complete, with all the problems that arise as a result of such events, the long cycle times - not least due to the fact that the waste has to be first heated and then cooled before it can be unloaded and, lastly, the need in some systems for the addition of plastic materials which are added to the waste in order to be able to treat the latter, with the consequent increase in costs.
  • the inventor of the process according to the invention has managed to avoid all the disadvantages listed above, even achieving considerable savings in terms of total disposal costs. Indeed, using the process in question, which can be implemented in a suitable and easy-to-use plant, it is possible to achieve significant results in all the following areas: personnel and environmental safety, hygiene and cleanliness, and even economics, given the low running and maintenance costs of the said plant.
  • the subject of the present invention consists of a process for sterilizing and disposing of potentially contaminated waste characterized by the characterizing part of the appended Claim 1.
  • a plant built so as to be able to implement the said process also forms part of the invention.
  • FIG. 1 shows a diagram of the said embodiment of a plant designed to implement the process of the invention
  • Fig. 2 shows a perspective view of a container designed to accommodate several vessels containing the waste to be treated
  • FIG. 3 shows a longitudinal section through the cavity of the chamber in which the waste is pulverized and sterilized
  • Fig. 4 shows a perspective view of a propeller made up of three cutting vanes with vertical deflecting blades attached;
  • FIG. 5 shows a perspective view of a detail of the invention illustrating two coaxial and counter- rotating propellers made up of three cutting vanes which are housed in the bottom end of the chamber.
  • FIG. 1 shows the said embodiment of a plant designed to implement the process of the invention.
  • vessels are conveyed, for example by means of a conveyor belt 4 which has been shown schematically by the dashed arrow A, towards an approximately cylindrical container 5 into which they are usually inserted by means of suitable equipment (not illustrated) based on criteria of known type used to pick up, handle and set down crates of goods, packages, and similar items in accordance with pre-established methods. It is advantageous to place several vessels In one on top of the other inside various radial sectors 5s, as can be seen more clearly in Fig. 2, so that lightweight and manageable containers can be used.
  • the container 5 is lowered (see arrow B) axially inside a chamber 2 which, having been opened in order to insert the container 5, is then hermetically closed.
  • a system consisting of several coaxial and counter-rotating multi-vane cutting propellers 6, 7 which, as they rotate, pulverize both the vessels In and the waste contained therein.
  • the temperature inside the chamber 2 is maintained between approx. 100 and approx. 200°C for the entire duration of the pulverizing treatment, with additional heat being supplied if and when necessary by heating elements housed in the walls of the chamber 2 or by pipes circulating diathermic oil and also housed in cavities formed in the said walls of the chamber 2.
  • the inventor suggests installing a device which is able to adjust both the power of the heating system and that used by the cutting propellers 6, 7 as a function of the temperature prevailing in the chamber; for example, reducing the speed of rotation of the propellers and thus the heat generated by friction when the temperature in the chamber tends to exceed the established limit of, for example, approx. 200°C, and increasing it when that temperature tends to fall below, say, 150°C.
  • the temperature in the chamber is maintained within a range of values intended to cause the total destruction of proteins, thereby achieving effective sterilization, without wasting energy unnecessarily .
  • the said counter-rotating multi-vane propellers 6, 7 preferably each consist of three horizontal cutting vanes 6t, 7t which carry on both their faces one or more additional vertical deflecting blades llv which, as well as contributing to the pulverizing action, by virtue of their orientation also push the pulverized pieces of vessels and waste towards the centre of the chamber 2, so as to keep them and direct them constantly towards the zone in which the various cutting surfaces are operating.
  • ribs 12v which are fixed onto the internal walls of the cavity 2c of the chamber 2, prevent the material from drifting back up by virtue of their preset inclination, which can be adjusted from outside the chamber 2.
  • the inventor Since it is known that the effectiveness of sterilization treatments is enhanced when these are carried out in a humid atmosphere, the inventor has also envisaged controlling the humidity levels inside the chamber by injecting superheated steam produced by a steam generator 10 into the chamber via a pipe lOv, which opens into the bottom 2f of the chamber 2, or removing it via a pipe 8r and conveying it to a condenser 24 when the concentration of steam becomes too high.
  • the inventor envisages injecting water via one or more pipes 8r, possibly even using the water obtained as stated above by the condensation of the steam extracted from the chamber 2.
  • the said pipes 8r can also be used to inject chemicals such as sodium hypochlorite or similar substances into the chamber 2, these chemicals being contained in a suitable reservoir 11 and being undiluted or mixed with water, in order to maximize the sterilizing action effected by the process.
  • chemicals such as sodium hypochlorite or similar substances
  • a predetermined treatment time which is sufficient to reduce the vessels In and the waste contained therein into pieces forming a granulate of desired particle size
  • this granulate is ejected by virtue of the pressure prevailing inside the chamber 2, which is kept below approx.
  • Another provision envisaged by the inventor is to give the said chamber 2 at least one through hole 14 in one of its walls (please refer to Fig. 3), which hole is designed to allow the fluid-tight insertion of a perforated basket 15 which houses one or more capsules of known type containing bacteria which are capable of detecting the effectiveness of the sterilization treatment carried out (for example bacilli of the genus stearothermophylus or of similar types ) .

Abstract

A process is described for sterilizing and disposing of potentially contaminated waste, comprising the following stages: a) inserting the waste into vessels (ln) made of plastic material; b) conveying the said vessels (ln) towards a chamber (2); c) inserting the said vessels (ln) containing waste into the abovementioned chamber (2); d) pulverizing and heating the waste and the said vessels (ln) inside the chamber (2) in which the pressure is maintained at or below 3 bar; e) injecting water and/or superheated steam inside the chamber (2) which is designed to maintain its interior at a pre-established humidity level and a temperature of between 100 and 200 °C; f) once pulverization is complete, discharging the pulverized waste and vessels (ln) and conveying them, while they are still at a temperature of between approx. 100 and approx. 200 °C, into a compacting device (3) which compacts them thermoplastically into cakes (20) of a desired geometric shape; and g) removal of the said cakes.

Description

Process for sterilizing and disposing of potentially contaminated waste.
The present invention relates to the health care sector and more specifically to that part of it that deals with the sterilization and subsequent disposal of various types of potentially contaminated waste, such as for example (but not exclusively) hospital waste. There are many known problems which hamper operations to sterilize hospital waste, among which the most significant relate to the hazards and costs involved in handling the waste both before and after treatment, the ease with which the known machines, such as triturators or the like, jam - thereby interrupting the sterilization cycle before it is complete, with all the problems that arise as a result of such events, the long cycle times - not least due to the fact that the waste has to be first heated and then cooled before it can be unloaded and, lastly, the need in some systems for the addition of plastic materials which are added to the waste in order to be able to treat the latter, with the consequent increase in costs.
Special and expensive containers are normally employed which, after they have been used to tip the waste into the treatment machines, must in turn be washed and sterilized before they can be reused and thus taken to wherever they are employed, involving not insignificant costs. The collection and transport of the treated waste also presents problems in terms of bulk and therefore of cost.
The inventor of the process according to the invention has managed to avoid all the disadvantages listed above, even achieving considerable savings in terms of total disposal costs. Indeed, using the process in question, which can be implemented in a suitable and easy-to-use plant, it is possible to achieve significant results in all the following areas: personnel and environmental safety, hygiene and cleanliness, and even economics, given the low running and maintenance costs of the said plant.
The subject of the present invention consists of a process for sterilizing and disposing of potentially contaminated waste characterized by the characterizing part of the appended Claim 1.
A plant built so as to be able to implement the said process also forms part of the invention.
A more detailed description of the process of the invention will now be given, in the course of which reference will be made to the appended drawings which illustrate a preferred embodiment of a plant specifically designed to implement the said process. In these drawings: - Fig. 1 shows a diagram of the said embodiment of a plant designed to implement the process of the invention;
Fig. 2 shows a perspective view of a container designed to accommodate several vessels containing the waste to be treated;
- Fig. 3 shows a longitudinal section through the cavity of the chamber in which the waste is pulverized and sterilized;
Fig. 4 shows a perspective view of a propeller made up of three cutting vanes with vertical deflecting blades attached;
- Fig. 5 shows a perspective view of a detail of the invention illustrating two coaxial and counter- rotating propellers made up of three cutting vanes which are housed in the bottom end of the chamber.
Let us firstly consider Fig. 1, which shows the said embodiment of a plant designed to implement the process of the invention.
Once the potentially contaminated waste has been placed inside suitable vessels In, these vessels are conveyed, for example by means of a conveyor belt 4 which has been shown schematically by the dashed arrow A, towards an approximately cylindrical container 5 into which they are usually inserted by means of suitable equipment (not illustrated) based on criteria of known type used to pick up, handle and set down crates of goods, packages, and similar items in accordance with pre-established methods. It is advantageous to place several vessels In one on top of the other inside various radial sectors 5s, as can be seen more clearly in Fig. 2, so that lightweight and manageable containers can be used.
Still using handling systems of known type, the container 5 is lowered (see arrow B) axially inside a chamber 2 which, having been opened in order to insert the container 5, is then hermetically closed.
Fitted close to the bottom end 2f of the said chamber 2 is a system consisting of several coaxial and counter-rotating multi-vane cutting propellers 6, 7 which, as they rotate, pulverize both the vessels In and the waste contained therein.
The temperature inside the chamber 2 is maintained between approx. 100 and approx. 200°C for the entire duration of the pulverizing treatment, with additional heat being supplied if and when necessary by heating elements housed in the walls of the chamber 2 or by pipes circulating diathermic oil and also housed in cavities formed in the said walls of the chamber 2. Since the friction caused by the action of the said cutting propellers 6 , 7 in pulverizing the vessels In and the waste generates heat in itself, the inventor suggests installing a device which is able to adjust both the power of the heating system and that used by the cutting propellers 6, 7 as a function of the temperature prevailing in the chamber; for example, reducing the speed of rotation of the propellers and thus the heat generated by friction when the temperature in the chamber tends to exceed the established limit of, for example, approx. 200°C, and increasing it when that temperature tends to fall below, say, 150°C.
In this way the temperature in the chamber is maintained within a range of values intended to cause the total destruction of proteins, thereby achieving effective sterilization, without wasting energy unnecessarily .
The said counter-rotating multi-vane propellers 6, 7 (please refer to Figs 4 and 5) preferably each consist of three horizontal cutting vanes 6t, 7t which carry on both their faces one or more additional vertical deflecting blades llv which, as well as contributing to the pulverizing action, by virtue of their orientation also push the pulverized pieces of vessels and waste towards the centre of the chamber 2, so as to keep them and direct them constantly towards the zone in which the various cutting surfaces are operating. At the same time ribs 12v, which are fixed onto the internal walls of the cavity 2c of the chamber 2, prevent the material from drifting back up by virtue of their preset inclination, which can be adjusted from outside the chamber 2.
Since it is known that the effectiveness of sterilization treatments is enhanced when these are carried out in a humid atmosphere, the inventor has also envisaged controlling the humidity levels inside the chamber by injecting superheated steam produced by a steam generator 10 into the chamber via a pipe lOv, which opens into the bottom 2f of the chamber 2, or removing it via a pipe 8r and conveying it to a condenser 24 when the concentration of steam becomes too high.
It is worthwhile noting that a certain amount of steam can be injected into the chamber 2 before or just after it is closed hermetically in order to avert any explosions that could occur as a result of the strong thermal shock to which the waste contained in the vessels In and the vessels themselves, which are made of plastic material, are exposed.
When the humidity level inside the chamber 2 needs to be increased without increasing the temperature, or even while reducing it, the inventor envisages injecting water via one or more pipes 8r, possibly even using the water obtained as stated above by the condensation of the steam extracted from the chamber 2.
The said pipes 8r can also be used to inject chemicals such as sodium hypochlorite or similar substances into the chamber 2, these chemicals being contained in a suitable reservoir 11 and being undiluted or mixed with water, in order to maximize the sterilizing action effected by the process. After a predetermined treatment time, which is sufficient to reduce the vessels In and the waste contained therein into pieces forming a granulate of desired particle size, this granulate is ejected by virtue of the pressure prevailing inside the chamber 2, which is kept below approx. 3 bar, when the opening bottom part 2f of the chamber 2 (preferably inclined at an angle α with respect to the horizontal) is opened, and is conveyed - if necessary with the additional help of a suction device 9 - towards a compacting device 3 of known type which, given the high temperature of the granulate, compacts it thermoplastically into cakes 20 of a desired shape and size. These cakes 20 can then be sent for recycling or can be destroyed, depending on the circumstances and their specific composition. If care is taken to ensure that the operations to convey and arrange the vessels of a container are carried out in the same time as that taken by the plant to treat the material contained in the chamber and then convey that material to the said compacting device, it is possible to achieve complete synchronization between the various stages of the process, with a minimum duration of the operating cycle and without wasting any time.
The plant described hitherto and illustrated in the drawings, as has been stated, is merely one preferred example of a possible embodiment of a plant designed to implement the process of the invention, a process which can in turn be implemented using different methods which are nevertheless still based on the concepts expressed in the appended Claim 1.
It would be advantageous and advisable to slave the operation of all the component parts of a plant to a central computer 13 so that the variables in play, such as temperature, pressure and synchronization of the various operations, can be constantly controlled.
Another provision envisaged by the inventor is to give the said chamber 2 at least one through hole 14 in one of its walls (please refer to Fig. 3), which hole is designed to allow the fluid-tight insertion of a perforated basket 15 which houses one or more capsules of known type containing bacteria which are capable of detecting the effectiveness of the sterilization treatment carried out (for example bacilli of the genus stearothermophylus or of similar types ) .
It is thus possible to check on the effectiveness of the treatment easily and with maximum speed without having to mix the said capsules in with the pieces of waste. It should be noted that the term "walls" of the chamber 2 should be understood in its most general sense, thereby also including its lid.

Claims

Claims
1. Process for sterilizing and disposing of potentially contaminated waste, characterized in that it comprises the following stages: a) inserting the waste into vessels (In) made of plastic material; b) conveying the said vessels (In) towards a chamber (2); c) inserting the said vessels (In) containing waste into the abovementioned chamber (2); d) pulverizing and heating the waste and the said vessels (In) inside the chamber (2) in which the pressure is maintained at or below 3 bar; e) injecting water and/or superheated steam inside the chamber which is designed to maintain its interior at a pre-established humidity level and a temperature of between 100 and 200°C; f) once pulverization is complete, discharging the pulverized waste and vessels (In) and conveying them, while they are still at a temperature of between approx. 100 and approx. 200°C, into a compacting device (3) which compacts them thermoplastically into cakes (20) of a desired geometric shape; and g) removal of the said cakes.
2. Process according to Claim 1, in which the said pressure inside the chamber (2) is maintained below the limit of 3 bar by means of a pressure-limiting valve which allows the steam contained in the said chamber (2) to flow out, and the said steam is then allowed to condense so that it can subsequently be re-injected in the form of water inside the chamber (2) when the humidity level and/or the temperature inside the chamber need to be controlled. 3. Process according to one of the preceding claims, in which, before starting the said pulverization of the vessels (In) and the waste contained therein, superheated steam is blown into the said chamber (2) in order to avert the possible risk of explosions .
4. Plant (100) for implementing the sterilization and disposal of potentially contaminated waste, characterized in that it comprises:
- a plurality of vessels (In) designed to contain the said waste:
- a system (4) for conveying the said vessels (In) and inserting them in an ordered fashion inside a container (5) located downstream of the conveying system (4);
- a chamber (2) fitted with a heating system and, on the inside, with means (6, 7) designed to pulverize the said vessels (In) and the waste contained therein, the said chamber (2) having a cavity (2c) designed to accommodate the said container (5) and being capable of being opened at its bottom end (2f) so that the pulverized and sterilized waste and vessels can be extracted;
- handling means designed to insert the said container (5) housing the said vessels (In) inside the said cavity (2c) of the chamber (2); a device (3) designed to compact the pulverized pieces of vessel (In) and waste extracted from the chamber (2) into cakes (20); - one or more valves for regulating the pressure inside the said chamber (2);
- means (9) designed to remove the said pulverized and sterilized vessels and waste from the cavity (2c) of the chamber (2) and convey them towards the said compacting device (3);
- a device (10) designed to generate superheated steam and convey it into the chamber (2); and
- a hydraulic plant (8) designed to inject water inside the chamber (2), either on its own or mixed with disinfectant substances contained in a suitable reservoir ( 11) .
5. Plant according to Claim 4, in which the power used by the means (6, 7) designed to pulverize the said vessels (In) and the waste contained therein can be adjusted so that the heat generated by the friction caused by the said pulverization action, together with the heat supplied by the said heating system, does not cause the temperature inside the chamber (2) to rise above a predetermined limit.
6. Plant according to one of Claims 3, 4 or 5, in which the said means for pulverizing the said vessels (In) and the waste contained therein consist of two coaxial and counter-rotating propellers (6, 7) having several horizontal cutting vanes (6t, 7t) located close to the opening bottom end (2f) of the said chamber (2).
7. Plant according to Claim 6, in which each of the horizontal cutting vanes (6t, 7t) forming a propeller carries fixed to it one or more vertical deflecting blades (llv) oriented such that they push the material to be pulverized towards that zone of the chamber (2) through which the said horizontal cutting vanes (6t, 7t) pass.
8. Plant according to either of Claims 6 and 7, in which cutting ribs 12v are fixed onto the internal walls of the chamber (2) and are oriented such that they prevent the material to be pulverized from drifting back up.
9. Plant according to one of Claims 3 to 8, in which the said container (5) is cylindrical and has a plurality of sectors (5s), each of which is designed to house a vessel (In) containing the waste, or several vessels (In) containing the waste placed vertically one on top of the other, the said container (5) being fitted with means designed to lock the said vessels (In) containing the waste inside it and to release them when the container (5) is inserted inside the chamber (2).
10. Plant according to one of Claims 3 to 9, in which the said chamber (2) is cylindrical and it, or at least its opening bottom end (2f), is inclined at an angle (α) with respect to a horizontal plane so as to make it easier to discharge the pulverized material completely. - lO - ll. Plant according to one of Claims 3 to 10, in which at least one through hole (14) is formed in the walls of the said chamber (2.) to allow the fluid-tight insertion of a perforated basket (15) designed to house one or more capsules containing bacteria which are capable of detecting the effectiveness of the sterilization treatment.
12. Plant according to one of the preceding Claims 4 to 11, in which the operation of its component parts is slaved to a computer (13).
PCT/IB2000/000887 1999-07-05 2000-07-03 Process for sterilizing and disposing of potentially contaminated waste WO2001002027A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU52425/00A AU5242500A (en) 1999-07-05 2000-07-03 Process for sterilizing and disposing of potentially contaminated waste

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01227/99A CH694115A5 (en) 1999-07-05 1999-07-05 Procedure and plant for the sterilization and elimination of potentially infectious waste.
CH1227/99 1999-07-05

Publications (1)

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WO2001002027A1 true WO2001002027A1 (en) 2001-01-11

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CH (1) CH694115A5 (en)
WO (1) WO2001002027A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004013554A1 (en) * 2002-07-29 2004-02-12 Officine Meccaniche Pejrani S.R.L. Process and apparatus for cooking and stabilisation of bio-organic materials
US8257461B2 (en) 2007-04-19 2012-09-04 Savaterra Oy Method of producing fertilizer out of sludge
US20150147241A1 (en) * 2013-11-27 2015-05-28 Yoichiro Yamanobe Infectious medical waste treatment system
CN104668263A (en) * 2013-12-02 2015-06-03 山野边洋一郎 Infectious medical waste treatment system
US9402705B2 (en) 2007-07-30 2016-08-02 Boston Scientific Scimed, Inc. Apparatus and method for the treatment of stress urinary incontinence

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FR2686794A1 (en) * 1992-01-30 1993-08-06 Vogrin Innovation Process PROCESS FOR HYGIENIZING WASTE AND INSTALLATION FOR CARRYING OUT THIS PROCESS.
US5614157A (en) * 1993-10-01 1997-03-25 Darlene Hall Unitized infectious waste processor and waste processing method
US5759491A (en) * 1995-07-21 1998-06-02 Bunin; Kiva Process and apparatus for the decontamination of infectious waste
GB2320192A (en) * 1998-02-11 1998-06-17 Eurocare Environmental Service Method and apparatus for treating clinical waste
US5800776A (en) * 1993-07-21 1998-09-01 S.T.R.A.P. Srl Method and a machine for sterilizing or disinfecting waste
US5799883A (en) * 1995-08-03 1998-09-01 Sterile Technology Industries, Inc. Waste treatment apparatus and method
FR2767700A1 (en) * 1997-08-30 1999-03-05 Bruno Jean Marie Aubert PROCESS FOR THERMAL DISINFECTION OF WASTE PARTICULARLY BIOLOGICAL HAZARDS AND DEVICE FOR CARRYING OUT SAID METHOD

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2686794A1 (en) * 1992-01-30 1993-08-06 Vogrin Innovation Process PROCESS FOR HYGIENIZING WASTE AND INSTALLATION FOR CARRYING OUT THIS PROCESS.
US5800776A (en) * 1993-07-21 1998-09-01 S.T.R.A.P. Srl Method and a machine for sterilizing or disinfecting waste
US5614157A (en) * 1993-10-01 1997-03-25 Darlene Hall Unitized infectious waste processor and waste processing method
US5759491A (en) * 1995-07-21 1998-06-02 Bunin; Kiva Process and apparatus for the decontamination of infectious waste
US5799883A (en) * 1995-08-03 1998-09-01 Sterile Technology Industries, Inc. Waste treatment apparatus and method
FR2767700A1 (en) * 1997-08-30 1999-03-05 Bruno Jean Marie Aubert PROCESS FOR THERMAL DISINFECTION OF WASTE PARTICULARLY BIOLOGICAL HAZARDS AND DEVICE FOR CARRYING OUT SAID METHOD
GB2320192A (en) * 1998-02-11 1998-06-17 Eurocare Environmental Service Method and apparatus for treating clinical waste

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004013554A1 (en) * 2002-07-29 2004-02-12 Officine Meccaniche Pejrani S.R.L. Process and apparatus for cooking and stabilisation of bio-organic materials
US8257461B2 (en) 2007-04-19 2012-09-04 Savaterra Oy Method of producing fertilizer out of sludge
US9402705B2 (en) 2007-07-30 2016-08-02 Boston Scientific Scimed, Inc. Apparatus and method for the treatment of stress urinary incontinence
US10413392B2 (en) 2007-07-30 2019-09-17 Boston Scientific Scimed, Inc. Apparatus and method for the treatment of stress urinary incontinence
US20150147241A1 (en) * 2013-11-27 2015-05-28 Yoichiro Yamanobe Infectious medical waste treatment system
US9637687B2 (en) * 2013-11-27 2017-05-02 Yoichiro Yamanobe Infectious medical waste treatment system
CN104668263A (en) * 2013-12-02 2015-06-03 山野边洋一郎 Infectious medical waste treatment system

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AU5242500A (en) 2001-01-22

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